Think Medical's Clinical Stethoscope • Dual head stethoscope • Latex free • Innovative lightweight chestpiece with pressure sensitive diaphragms • Dynamic sound range • Stainless steel stem improves sound conductivity. • Sound transmission with less noise • Screw-on bell assembly for low frequency sounds • Extra-thick-walled PVC tubing helps shield sounds and block out ambient noise. • Internal binaural spring with sound conductor • Includes hard case with large and small soft sealing eartips, replacement diaphragms. • Overall length: about 31" • Ideal for General Practitioners, Nurses and Nursing Students, Medical Students, and EMTs • Limited Lifetime Warranty • Boxed Packaging